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HTTPConnectionPool(host='xx.xx.xx.xx', port=xx): Max retries exceeded with url:(Caused by ConnectTimeoutError(<urllib3.connection.HTTPConnection object at 0x0000015A25025EB8>...))

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最近项目不忙了~~有开始专研的python大业,上来想用pip安装一个第三方的库,就一直报错: Could not fetch URL https://pypi.org/simple/xrld/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/xrld/ (Cause…

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爬虫多次访问同一个网站一段时间后会出现错误 HTTPConnectionPool(host:XX)Max retries exceeded with url '<requests.packages.urllib3.connection.HTTPConnection object at XXXX>: Failed to establish a new connection: [Errno 99] Cannot assign requested address' 是因为在每次数据传输前客户端要和服…

HTTPConnectionPool（host:XX）Max retries exceeded with url

爬虫多次访问同一个网站一段时间后会出现错误 HTTPConnectionPool(host:XX)Max retries exceeded with url '<requests.packages.urllib3.connection.HTTPConnection object at XXXX>: Failed to establish a new connection: [Errno 99] Cannot assign requested address'是因为在每次数据传输前客户端要和服务…

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安装xlrd包的时候,总是报错:ERROR: Could not install packages due to an EnvironmentError: HTTPConnectionPool (host='127.0.0.1', port=8888): Max retries exceeded with url: http://pypi.douban .com/simple/ (Caused by ProxyError('Cannot connect to proxy.', NewConnec…

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我在使用SSM框架的时候,连接的是sqlserver 2008r2数据库,但是查询数据的时候总是出现这样的警告信息,导致的结果是第一次登录的时候获取数据慢或者获取数据失败,具体的log信息如下 警告: ConnectionID:2 ClientConnectionId: 26d4b559-c985-4b2e-bd8e-dd7a53b67e48 Prelogin error: host 127.0.0.1 port 1434 Error reading prelogin response: Con…

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